An electromagnetic relay

Abstract

The application provides an electromagnetic relay, which comprises a base, a coil holder, an electromagnetic system and a contact system, the coil holder is assembled on the base, the electromagnetic system comprises an armature, and the contact system comprises a moving spring and a stationary spring; the coil holder comprises a first flange, a second flange and a winding shaft; the stationary spring is provided with a stationary spring fixing part corresponding to the first flange, the armature is arranged corresponding to the first flange, the moving spring is fixed on the armature, and a moving contact on the moving spring and a stationary contact on the stationary spring fixing part form a contact group; the first flange of the coil holder further protrudes a stop part, and on a projection plane projected to the base, the stop part and the armature are both not coincided with the position of the stationary spring fixing part, the armature extends a stop foot, and the stop foot is inserted into the stop part to realize limiting. The current carrying capacity can be improved without changing the volume, so that the effect of miniaturization and large current carrying capacity is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of relays, in particular to an electromagnetic relay. BACKGROUND

[0002] The current-carrying capacity of the existing electromagnetic relay products is limited by the product volume, which cannot meet the needs of customers. The existing electromagnetic relay product structure is shown in the document with the publication number CN202008961U and the name of normally open electromagnetic relay with coil holder limiting; in this document, in order to limit the movement of the armature, a clamping groove is provided at the top end of the coil holder corresponding to the surface of the armature, and the armature is limited in the clamping groove, as shown in the document Figure 1 , the clamping groove and the contact are located on the same side. If the width of the moving and static spring exit end is increased to increase the current-carrying area, it is necessary to increase the parts or volume, etc., which is not conducive to miniaturization design, and also leads to the increase of parts, making the structure complex and not conducive to automatic assembly, etc. SUMMARY

[0003] Therefore, the present application provides an electromagnetic relay which can improve the current-carrying capacity while keeping the volume unchanged, thereby realizing the effect of miniaturization and large current.

[0004] In order to achieve the above-mentioned purpose, the technical scheme provided by the present application is as follows:

[0005] An electromagnetic relay, comprising a base, a coil holder, an electromagnetic system and a contact system, the coil holder is assembled on the base, the electromagnetic system comprises an armature, and the contact system comprises a moving spring and a static spring; the coil holder comprises a first flange, a second flange and a winding shaft between the first flange and the second flange; the static spring has a static contact fixed part corresponding to the first flange, the armature is provided corresponding to the first flange, the moving spring is fixed on the armature, and the moving contact on the moving spring and the static contact on the static contact fixed part form a contact group; the first flange of the coil holder further protrudes a stop part, and in the projection plane projected to the base, the stop part and the armature are not coincided with the position of the static contact fixed part, the armature extends a stop foot, and the stop foot is inserted into the stop part to realize limiting.

[0006] Further, the stop part is provided on the side close to the base.

[0007] Further, the base is assembled with a coil exit end, the electromagnetic system further comprises a coil, the coil is assembled on the winding shaft of the coil holder and connected with the coil exit end, the second flange of the coil holder is provided with a insertion slot, the insertion slot is assembled with a soldering sheet, and the soldering sheet is abutted on the coil exit end and welded and fixed.

[0008] Furthermore, there are two coil leads, namely a first coil lead and a second coil lead, and the first coil lead extends to the position of the first flange of the corresponding coil frame. The base is provided with a coil lead insertion port, and the first coil lead has a lead-out foot that goes into the coil lead insertion port. The stop part presses against the lead-out foot of the first coil lead.

[0009] Furthermore, the stop portion has an upper opening facing the armature position and at least one lateral opening communicating with the upper opening; the stop foot of the armature is inserted into the stop portion through the upper opening.

[0010] Furthermore, the cross-section of the stop portion has a "7" shaped structure, including a first part and a second part arranged at an angle to each other. The first part is connected to the first flange of the coil frame; the second part corresponds to the first flange, and the stop foot of the armature is located between the second part of the stop portion and the first flange.

[0011] Furthermore, a reinforcing rib is also connected between the first part of the stop portion and the first flange.

[0012] Furthermore, the base is also equipped with a moving spring lead-out end, which is located on the opposite side of the stationary spring. The contact group is provided in two sets, and the two moving contacts on the moving spring are respectively connected to the moving spring lead-out end through wires to form a parallel double contact structure.

[0013] Furthermore, the first flange is located between the movable spring lead-out end and the stationary spring. The number of wires is one, with both ends of the wire connected to two movable contacts on the movable spring, and the middle of the wire connected to the movable spring lead-out end.

[0014] Furthermore, an electrical connection portion is formed on the lead-out end of the moving spring, the surface of the electrical connection portion is recessed, and the wire is connected to the electrical connection portion.

[0015] Furthermore, the surface of the electrical connection portion is also provided with a welding protrusion, and the wire is welded and fixed to the welding protrusion.

[0016] Furthermore, the surface of the electrical connection portion is also formed with a grid-like recess.

[0017] Furthermore, the armature is chamfered at the end corresponding to the lead-out end of the moving spring.

[0018] Furthermore, the electromagnetic system also includes a coil, an iron core, a yoke, and a tension spring. The coil is mounted on a winding shaft. The yoke has an L-shaped structure, including a horizontal portion and a vertical portion. The horizontal portion of the yoke is positioned corresponding to the second flange. The iron core passes through the coil frame and is fixedly connected to the horizontal portion of the yoke. The vertical portion of the yoke is located outside the coil. The armature has a lower end facing the base, an upper end away from the base, a left end facing the stationary contact fixing part, and a right end away from the stationary contact fixing part. The right end of the armature faces and is connected to the vertical portion of the yoke. A tension spring connects the armature and the vertical portion of the yoke.

[0019] Furthermore, the lower and upper ends of the armature are provided with grooves near the right end, and the vertical part of the yoke is provided with a protrusion corresponding to the groove, which is fitted into the groove of the armature. The right end of the armature is adapted to the blade edge of the vertical part of the yoke.

[0020] Furthermore, the iron core has an iron core pole surface disposed on the first flange, the iron core pole surface corresponds to the armature, and the iron core pole surface and the stationary contact fixing part do not coincide in the projection plane projected onto the base; the first flange of the coil frame also has a protruding baffle wall; the baffle wall is located between the iron core pole surface and the stationary contact fixing part.

[0021] The technical solution provided by this invention has the following beneficial effects:

[0022] A stop is designed on the coil frame, and on the projection surface projected onto the base, the stop and the armature do not coincide with the position of the stationary contact fixing part, which can give space to the stationary contact fixing part, thus providing sufficient space to arrange the stationary contact fixing part. This can improve the current carrying capacity while keeping the volume unchanged, thereby achieving the effect of miniaturization and large current carrying capacity.

[0023] Meanwhile, the armature extends with a stop foot, and the armature is limited by inserting the stop foot into the stop part, thus improving stability. Attached Figure Description

[0024] Figure 1 The figure shown is a three-dimensional structural diagram of the electromagnetic relay in the embodiment;

[0025] Figure 2 The diagram shown is a partial structural representation of the electromagnetic relay in the embodiment. Figure 1 ;

[0026] Figure 3 As shown Figure 2 Enlarged view of region A in the middle;

[0027] Figure 4 The diagram shown is a partial structural representation of the electromagnetic relay in the embodiment. Figure 2 ;

[0028] Figure 5 The diagram shown is a partial structural representation of the electromagnetic relay in the embodiment. Figure 3 ;

[0029] Figure 6 The diagram shown is a structural schematic of the base portion in the embodiment.

[0030] Figure 7 The diagram shown is a structural schematic of the coil frame in the embodiment;

[0031] Figure 8 The figure shown is a schematic diagram of the armature structure in the embodiment;

[0032] Figure 9 The diagram shown is a schematic diagram of the structure of the lead-out end of the moving spring in the embodiment;

[0033] Figure 10 The diagram shown is a structural schematic of the spring lead-out end in another angle in the embodiment;

[0034] Figure 11 The diagram shown is an exploded view of the electromagnetic relay in the embodiment.

[0035] Figure 12 The diagram shown is a partial structural schematic of the electromagnetic relay in the embodiment.

[0036] Figure 13 As shown Figure 12 Enlarged view of region B in the middle;

[0037] Figure 14 The diagram shown is a structural schematic of the electromagnetic relay in the embodiment from another angle;

[0038] Figure 15 As shown Figure 14 A magnified view of region C in the middle. Detailed Implementation

[0039] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments and to explain the operating principles of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0040] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0041] Reference Figures 1 to 15As shown, the electromagnetic relay of this embodiment includes a base 10, a coil frame 20, an electromagnetic system, and a contact system. In this specific embodiment, the electromagnetic system includes a coil 31, an iron core 36, an armature 32, and a yoke 33, and the contact system includes a stationary spring 42 and a moving spring 41. The base 10 is equipped with a moving spring lead-out end 43, a coil lead-out end 50, and the stationary spring 42 of the contact system.

[0042] The coil frame 20 is mounted on the base 10. The coil frame 20 includes a first flange 21, a second flange 202, and a winding shaft 201 located between the first flange 21 and the second flange 202. The stationary spring 42 has a stationary contact fixing part 421 corresponding to the first flange 21. The armature 32 is provided corresponding to the first flange 21. The moving spring 41 is fixed on the armature 32, and the moving contact 411 on it corresponds to the stationary contact 423 on the stationary contact fixing part 421 to form a contact group. The first flange 21 of the coil frame 20 also has a stop part 22 protruding. On the projection surface projected onto the base (defined as the base 10 being located below the coil frame 20, this projection is a vertical downward projection), the stop part 22 and the armature 32 do not coincide with the position of the stationary contact fixing part 421. This arrangement can provide space for the stationary contact fixing part 421, thereby providing sufficient space to arrange the stationary contact fixing part 421 to improve the current carrying capacity.

[0043] The armature 32 extends with a stop foot 321, and the stop foot 321 is inserted into the stop part 22 to limit the armature 32, thus improving stability.

[0044] More specifically, on the projection surface, the stop portion 22 is located within the projection surface of the armature 32.

[0045] The stop 22 is located on the side near the base 10. This arrangement allows the armature 32 to be installed from the side away from the base 10. For example, if the base 10 is defined as the lower side, the side away from the base 10 is the upper side. The armature 32 can be installed from the upper side downwards, which improves the assemblability of the product.

[0046] The coil 31 is assembled onto the winding shaft 201 of the coil frame 20 and connected to the coil lead-out end 50. Furthermore, since the coil lead-out end 50 may loosen and retract due to upward force during installation and use, the coil frame 20 structure designed in this scheme, in addition to its own winding function, also provides anti-retraction functionality for the two coil lead-out ends 50. Specifically, the second flange 202 of the coil frame 20 is provided with slots 203, specifically two slots 203. The two slots are fitted with solder pads 60, which press against the coil lead-out ends 50 and are soldered, enhancing connection reliability and providing anti-retraction functionality for the coil lead-out ends 50.

[0047] In this specific embodiment, there are two coil lead-out terminals 50, namely a first coil lead-out terminal 501 and a second coil lead-out terminal 502, as follows: Figure 5 As shown, the first coil lead-out end 501 extends to the position of the first flange 2 corresponding to the coil frame 20. The base 10 has a coil lead-out end socket, and the first coil lead-out end 501 has a lead-out foot 51 that passes through the coil lead-out end socket. The stop part 22 presses against the lead-out foot 51 of the first coil lead-out end 501. In this way, the assembly strength of the coil lead-out end 50 is ensured.

[0048] Furthermore, the direction facing the base 10 is defined as downward, and the direction away from the base 10 is defined as upward. The stop portion 22 has an upper opening facing the armature position and at least one side opening communicating with the upper opening; the stop foot 321 of the armature 32 is inserted into the stop portion 22 through the upper opening. The side opening facilitates demolding and other operations during injection molding and is less prone to dust accumulation.

[0049] Specifically, the stop portion 22 has a "7"-shaped cross-section, comprising a first portion 221 and a second portion 222 arranged at an angle (90° in this embodiment) to each other, forming a two-sided structure. The first portion 221 is laterally disposed and connected to the first flange 21 of the coil frame 20, and the opening on the opposite side of the first portion 221 is a lateral opening; the second portion 222 is opposite to the first flange 21. Thus, the stop portion 22 has an upward-facing upper opening, a downward-facing lower opening, and a lateral opening. The stop foot 321 of the armature 32 is inserted between the second portion 222 and the first flange 21 of the stop portion 22 through the upper opening to achieve limiting. This structure simplifies the mold structure and reduces the cost of parts.

[0050] Meanwhile, in order to enhance the structure of the stop portion 22, a reinforcing rib 23 is also connected between the first part 221 of the stop portion 22 and the first flange 21.

[0051] The yoke 33 has an L-shaped structure, including a horizontal part 331 and a vertical part 332. The horizontal part 331 is provided corresponding to the second flange 202. The iron core 36 passes through the coil frame 20 and is fixedly connected to the horizontal part 331. Specifically, the iron core 36 has an iron core pole surface provided on the first flange 21. The iron core pole surface corresponds to the armature 32, and the iron core pole surface and the stationary contact fixing part 421 do not coincide in the projection plane of the base.

[0052] The vertical portion 332 of the yoke is located outside the coil 31. The armature 32 has a lower end facing the base 10, an upper end away from the base 10, a left end facing the stationary contact fixing part 421, and a right end away from the stationary contact fixing part 421. The right end of the armature 32 faces and is connected to the vertical portion 332 of the yoke. Specifically, the lower and upper ends of the armature 32 have grooves near the right end. The vertical portion 332 of the yoke has corresponding protrusions that fit into the grooves of the armature 32. The right end of the armature 32 is adapted to the blade edge of the yoke. A tension spring 34 connects the armature 32 and the vertical portion 332 of the yoke, with one end of the tension spring 34 connected to the armature 43 and the other end connected to the yoke 33. This achieves the assembly of the electromagnetic system. Of course, in other embodiments, the structure and connection relationship of the contact parts are not limited to this.

[0053] Specifically, the first flange 21 of the coil frame 20 also has a protruding retaining wall 24, which is located between the pole face of the iron core 36 and the stationary contact fixing part 421. The presence of this retaining wall 24 can effectively enhance the structure of the first flange 21 of the coil frame 20 and prevent its deformation. It also increases the insulation strength and creepage distance between the iron core 36 and the stationary spring 42 (including the lead-out end of the stationary spring 42 inserted into the base).

[0054] Meanwhile, the baffle 24 is also located between the armature 32 and the stationary contact fixing part 421. That is, the armature 32 and the stationary contact fixing part 421 are separated by the baffle 24 to prevent the armature 32 from contacting the stationary contact fixing part 421 and causing a short circuit, thus making the structure more stable.

[0055] More specifically, the retaining wall 24 is adjacent to the first part 221 of the stop 22, and the reinforcing rib 23 is also connected to the retaining wall 24.

[0056] The movable spring lead-out end 43 is located on the opposite side of the stationary spring 42. The contact group has two sets: two stationary contacts 423 are provided on the stationary contact fixing part 421, and two movable contacts 411 are provided on the movable spring 41. The two movable contacts 411 on the movable spring 41 are respectively connected to the movable spring lead-out end 43 through wires 44 (such as copper braided wire), forming a parallel double contact structure.

[0057] More specifically, the first flange 21 is located between the moving spring lead-out end 43 and the stationary spring 42. There is one wire 44, with its two ends connected to two moving contacts 411 on the moving spring 41, and its middle section connected to the moving spring lead-out end 43. This design facilitates automated assembly and replacement operations.

[0058] Of course, in other embodiments, the wire 44 is provided in two segments. The first ends of the two segments of the wire 44 are respectively connected to two moving contacts 411, and the second ends of the two segments of the wire 44 are connected and welded together to the moving spring lead-out end 43.

[0059] The clearance provided by the stop portion 22 allows the stationary contact fixing portion 421 to extend wider. The two stationary contacts 423 on the stationary contact fixing portion 421 can be pulled apart, thereby maintaining a suitable distance between the two sets of contacts and providing sufficient testing space for the machine inspection tester.

[0060] More specifically, the movable spring lead-out end 43 has an L-shaped structure, with a first part 4301 and a second part 4302 at an angle to each other. The first part 4301 is used for welding the wire 44, and the second part 4302 is mounted on the base 10. The yoke 33 presses against the second part 4302 of the movable spring lead-out end 43. With this configuration, the heat generated by the movable spring lead-out end 43 can be conducted to the yoke 33 and quickly dissipated through the large heat dissipation surface of the yoke 33.

[0061] Meanwhile, to facilitate welding, the structure of the movable spring lead-out end 43 was enlarged. An electrical connection portion 431 was formed on the movable spring lead-out end 43, and the surface of the electrical connection portion 431 was recessed. The wire 44 was connected to the electrical connection portion 431. By recessing the electrical connection portion 431 and welding it to the wire 44, the weld joint can avoid the movement of the armature 32.

[0062] More specifically, the surface of the electrical connection part 431 is further provided with a welding protrusion 432, on which the wire 44 is welded and fixed. This helps to concentrate the current when the lead-out pin is welded to the wire 44, thereby improving the reliability of the welding.

[0063] Furthermore, the surface of the electrical connection part 431 is also formed with a grid-shaped recess 433. That is, a grid-shaped recess 433 is designed around the welding protrusion 432. The purpose is that after welding, if material overflows, the material can move into the grid-shaped recess 433 to fill the recess 433, so as not to overflow to other places and cause other parts that need to move to be unable to move.

[0064] To further prevent interference during movement, the armature 32 is chamfered at its end 322 corresponding to the spring lead-out end 43, such as with a chamfered C-angle. This improves the obstacle avoidance effect.

[0065] The electromagnetic relay in this embodiment adopts the above-described structure, which facilitates installation. Specifically, in the installation process, the moving spring 41 and armature 32 are first riveted together to form the moving spring armature portion. Then, the moving contact 411 of the moving spring 41 and the moving spring lead-out end 43 are connected via wire 44 to form the moving spring lead-out portion. It is then installed into the base 10. Simultaneously, the assembly of the coil frame 20, coil 31, yoke 33, and core 36 is also installed into the base 10. Finally, the armature 32 is inserted into the stop portion 22 of the coil frame 20 for corresponding assembly and connection. This allows for automated production, increased output, and reduced manufacturing costs.

[0066] The stop part 22 is designed to be close to the base 10, which allows the wire 44 to be welded to the moving contact and the lead-out end 43 of the moving spring before the subsequent assembly of the base 10 and the magnetic circuit. This helps to ensure the welding quality of the wire 44 and the accuracy of the solder joint positioning so as to achieve automated assembly and improve the consistency of product performance.

[0067] Of course, in other embodiments, the structure of the electromagnetic relay is not limited to this. For example, the moving spring lead-out end 43, the coil lead-out end 50 and / or the stationary spring 42 of the contact system are not limited to being mounted on the base 10, or the structure of the electromagnetic system is not limited to the above description, or is not limited to a double contact structure. The number of its contact groups can be one group or two or more groups; etc.

[0068] Specifically, the stationary spring 42 has an L-shaped structure, including a stationary spring body 422 at an angle to each other and the aforementioned stationary contact fixing part 421; the stationary spring body 422 is located on the opposite side of the vertical part 332 of the yoke, making the structure more compact. Meanwhile, a notch 424 is formed on the side of the stationary spring body 422 away from the stationary contact fixing part 421. This notch 424 allows the tooling to press down on the stepped surface of the notch 424 during assembly, forming a force point and facilitating assembly. Furthermore, the notch 424 design prevents tilting during press-fitting due to excessively long terminals and saves materials, reducing component costs. Of course, in other embodiments, the notch 424 structure may be omitted.

[0069] The stationary spring 42, the moving spring lead-out end 43, and the yoke 33 are all L-shaped structures. At the same time, the moving spring lead-out end 43 is located on the opposite side of the stationary spring 42, and the yoke 44 presses against the moving spring lead-out end 43. In this way, the three L-shaped structures are nested together, making the structure compact and maximizing the space utilization in a very limited space without wasting any space. This achieves a current carrying capacity of 100A at 85℃ in a small volume (originally, a relay of the same volume only reached 50A), thus improving the current carrying performance of the product.

[0070] Furthermore, the coil frame 20 is also provided with an anti-reverse boss 211, which presses against the top of the stationary spring 42. After assembly, the anti-reverse boss 211 holds the stationary spring 42 in place, preventing it from tipping over and increasing its holding force relative to the base 10. This prevents the spring from being pushed back during use, reduces the risk of failure, provides excellent stability, and improves the product's resistance to vibration and impact. Of course, other embodiments are not limited to this.

[0071] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. An electromagnetic relay, comprising a base, a coil frame, an electromagnetic system, and a contact system, wherein the coil frame is mounted on the base, the electromagnetic system includes an armature, and the contact system includes a moving spring and a stationary spring; the coil frame includes a first flange, a second flange, and a winding shaft located between the first flange and the second flange; the stationary spring has a stationary contact fixing portion corresponding to the first flange, the armature is disposed corresponding to the first flange, the moving spring is fixed on the armature, and the moving contact on the moving spring corresponds to the stationary contact on the stationary contact fixing portion to form a contact group; characterized in that: The first flange of the coil frame also has a stop portion. The stop portion is located on the side near the base. On the projection surface projected onto the base, the stop portion and the armature do not coincide with the position of the stationary contact fixing portion. The stop portion is located in the projection surface of the armature. The armature extends with a stop foot, and the stop foot is inserted into the stop portion to achieve the limiting.

2. The electromagnetic relay according to claim 1, characterized in that: The base is equipped with a coil lead-out end, and the electromagnetic system also includes a coil. The coil is assembled onto the winding shaft of the coil frame and connected to the coil lead-out end. The second flange of the coil frame is provided with a slot, and a solder pad is assembled in the slot. The solder pad abuts against the coil lead-out end and is welded and fixed.

3. The electromagnetic relay according to claim 2, characterized in that: The number of coil leads is two, namely a first coil lead and a second coil lead. The first coil lead extends to the position of the first flange of the corresponding coil frame. The base is provided with a coil lead insertion port. The first coil lead has a lead-out foot that goes into the coil lead insertion port. The stop part presses against the lead-out foot of the first coil lead.

4. The electromagnetic relay according to claim 1, characterized in that: The stop portion has an upper opening facing the armature position and at least one lateral opening communicating with the upper opening; the stop foot of the armature is inserted into the stop portion through the upper opening.

5. The electromagnetic relay according to claim 4, characterized in that: The stop portion has a "7" shaped cross section, including a first part and a second part arranged at an angle to each other. The first part is laterally arranged and connects the second part and the first flange of the coil frame. The second part is opposite to the first flange, and the stop foot of the armature is located between the second part of the stop portion and the mounting side.

6. The electromagnetic relay according to claim 4, characterized in that: A reinforcing rib is also connected between the first part of the stop and the first flange.

7. The electromagnetic relay according to claim 1, characterized in that: The base is also equipped with a moving spring lead-out end, which is located on the opposite side of the stationary spring. The contact group is provided in two sets, and the two moving contacts on the moving spring are respectively connected to the moving spring lead-out end through wires to form a parallel double contact structure.

8. The electromagnetic relay according to claim 7, characterized in that: The first flange is located between the moving spring lead-out end and the stationary spring. There is one wire, with its two ends connected to two moving contacts on the moving spring, and its middle part connected to the moving spring lead-out end.

9. The electromagnetic relay according to claim 7, characterized in that: An electrical connection portion is formed on the lead-out end of the moving spring. The surface of the electrical connection portion is recessed, and the wire is connected to the electrical connection portion. The surface of the electrical connection portion also has a welding protrusion, and the wire is welded and fixed to the welding protrusion. The surface of the electrical connection portion also has a grid-like recess. The armature is chamfered at the end corresponding to the lead-out end of the moving spring.

10. The electromagnetic relay according to claim 1, characterized in that: The electromagnetic system further includes a coil, an iron core, a yoke, and a tension spring. The coil is mounted on a winding shaft. The yoke has an L-shaped structure, including a horizontal portion and a vertical portion. The horizontal portion of the yoke is positioned corresponding to the second flange. The iron core passes through the coil frame and is fixedly connected to the horizontal portion of the yoke. The vertical portion of the yoke is located outside the coil. The armature has a lower end facing the base, an upper end away from the base, a left end facing the stationary contact fixing part, and a right end away from the stationary contact fixing part. The right end of the armature faces and is connected to the vertical portion of the yoke. A tension spring connects the armature and the vertical portion of the yoke.

11. The electromagnetic relay according to claim 10, characterized in that: The lower and upper ends of the armature are provided with grooves near the right end. The vertical part of the yoke is provided with a protrusion corresponding to the groove, and is assembled into the groove of the armature through the protrusion. The right end of the armature is adapted to the blade edge of the vertical part of the yoke.

12. The electromagnetic relay according to claim 10, characterized in that: The core has a core pole face on the first flange, the core pole face corresponds to the armature, and the core pole face and the stationary contact fixing part do not coincide in the projection plane of the base; the first flange of the coil frame also has a protruding baffle wall; the baffle wall is located between the core pole face and the stationary contact fixing part.

Images